Current Electricity

Related Questions

• The resistance of a galvanometer is 25 ohm and it requires $50\,\mu A$ for full deflection. The value of the shunt resistance required to convert it into an ammeter of 5 amp is

  ---

• A wire of length 100 cm is connected to a cell of emf 2 V and negligible internal resistance. The resistance of the wire is 3 $\Omega$. The additional resistance required to produce a potential drop of 1 milli volt per cm is

  ---

• A cell whose e.m.f. is 2 V and internal resistance is $0.1\,\Omega $, is connected with a resistance of$3.9\,\Omega $. The voltage across the cell terminal will be

  ---

• A current of two amperes is flowing through a cell of e.m.f. 5 volts and internal resistance 0.5 ohm from negative to positive electrode. If the potential of negative electrode is 10V, the potential of positive electrode will be

  ---

• Three unequal resistors in parallel are equivalent to a resistance 1 ohm. If two of them are in the ratio 1 : 2 and if no resistance value is fractional, the largest of the three resistances in ohms is

  ---